EP2056260A3 - Device and method for checking valuable documents - Google Patents

Device and method for checking valuable documents Download PDF

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Publication number
EP2056260A3
EP2056260A3 EP08014847A EP08014847A EP2056260A3 EP 2056260 A3 EP2056260 A3 EP 2056260A3 EP 08014847 A EP08014847 A EP 08014847A EP 08014847 A EP08014847 A EP 08014847A EP 2056260 A3 EP2056260 A3 EP 2056260A3
Authority
EP
European Patent Office
Prior art keywords
luminescence intensity
light
valuable documents
phase
excitation light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08014847A
Other languages
German (de)
French (fr)
Other versions
EP2056260B1 (en
EP2056260A2 (en
Inventor
Jürgen Dr. Schützmann
Hendrik Dr. Derks
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giesecke and Devrient Currency Technology GmbH
Original Assignee
Giesecke and Devrient GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Publication of EP2056260A2 publication Critical patent/EP2056260A2/en
Publication of EP2056260A3 publication Critical patent/EP2056260A3/en
Application granted granted Critical
Publication of EP2056260B1 publication Critical patent/EP2056260B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/1205—Testing spectral properties

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Abstract

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Erkennung gefälschter Wertdokumente, bei dem die Wertdokumente mit getaktetem Anregungslicht einer Lichtquelle beleuchtet werden. Innerhalb der Hellphase des Anregungslichts wird eine erste Lumineszenzintensität erfasst, innerhalb der Dunkelphase eine zweite Lumineszenzintensität. Aufgrund des Nachleuchtens der Lichtpulse ergibt sich eine Restfluoreszenz, die die Lumineszenzintensität in der Dunkelphase verfälscht. Durch Verknüpfen der zweiten Lumineszenzintensität mit der ersten Lumineszenzintensität, z.B. durch Subtraktion einer skalierten ersten Lumineszenzintensität, wird eine korrigierte zweite Lumineszenzintensität bestimmt, die im Wesentlichen dem Phosphoreszenzsignal des Wertdokuments entspricht.

Figure imgaf001
The invention relates to a method and a device for detecting forged value documents, in which the value documents are illuminated with clocked excitation light of a light source. Within the light phase of the excitation light a first luminescence intensity is detected, within the dark phase a second luminescence intensity. Due to the afterglow of the light pulses results in a residual fluorescence, which falsifies the luminescence intensity in the dark phase. By combining the second luminescence intensity with the first luminescence intensity, for example by subtracting a scaled first luminescence intensity, a corrected second luminescence intensity is determined, which substantially corresponds to the phosphorescence signal of the value document.
Figure imgaf001
EP08014847.1A 2007-09-20 2008-08-21 Method for checking documents of value Active EP2056260B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007044878A DE102007044878A1 (en) 2007-09-20 2007-09-20 Method and device for checking value documents

Publications (3)

Publication Number Publication Date
EP2056260A2 EP2056260A2 (en) 2009-05-06
EP2056260A3 true EP2056260A3 (en) 2010-02-17
EP2056260B1 EP2056260B1 (en) 2019-10-30

Family

ID=40417842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08014847.1A Active EP2056260B1 (en) 2007-09-20 2008-08-21 Method for checking documents of value

Country Status (3)

Country Link
US (1) US7829869B2 (en)
EP (1) EP2056260B1 (en)
DE (1) DE102007044878A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9493806B2 (en) 2001-06-01 2016-11-15 Colorado State University Research Foundation Enzymatic biosensing systems
US9493805B2 (en) 2001-06-01 2016-11-15 Colorado State University Research Foundation Enzymatic biosensors with enhanced activity retention for detection of organic compounds
US9796998B2 (en) 2007-04-09 2017-10-24 Colorado State University Research Foundation Oxygenase-based biosensing systems for measurement of halogenated alkene concentrations
US8455844B2 (en) * 2009-03-11 2013-06-04 Colorado State University Research Foundation System and method for time-division multiplexed optical sensing of biosensors
WO2012071471A2 (en) 2010-11-22 2012-05-31 Colorado State University Research Foundation Biosensing systems for measurement of lactose
WO2013019982A2 (en) 2011-08-02 2013-02-07 Colorado State University Research Foundation Biosensing system with extended lifetime via cofactor recycling
JP6037889B2 (en) * 2013-02-25 2016-12-07 オリンパス株式会社 Scanning observation device
JP6247747B2 (en) * 2014-04-18 2017-12-13 グローリー株式会社 Paper sheet authenticity determination device and paper sheet authenticity determination method
JP6288709B2 (en) 2014-05-22 2018-03-07 グローリー株式会社 Fluorescence / phosphorescence detector
JP6316148B2 (en) * 2014-09-04 2018-04-25 株式会社東芝 Excitation light detector
DE102016000011A1 (en) * 2016-01-05 2017-07-06 Giesecke & Devrient Gmbh Completeness check of a value document
CN108171868B (en) * 2017-12-26 2019-12-10 深圳怡化电脑股份有限公司 Port currency classification method and device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999009382A1 (en) * 1997-08-13 1999-02-25 De La Rue International Limited Detector methods and apparatus
US6035914A (en) * 1993-10-22 2000-03-14 Martin Marietta Energy Systems Inc. Counterfeit-resistant materials and a method and apparatus for authenticating materials
GB2366371A (en) * 2000-09-04 2002-03-06 Mars Inc Sensing documents such as currency items

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4150295A (en) 1978-01-05 1979-04-17 Analytical Radiation Corporation Method and apparatus for background correction in photoluminescent analysis
DE19651101A1 (en) * 1996-12-09 1998-06-10 Giesecke & Devrient Gmbh Device and method for the detection of fluorescent and phosphorescent light
US6473165B1 (en) * 2000-01-21 2002-10-29 Flex Products, Inc. Automated verification systems and methods for use with optical interference devices
EP1158459B2 (en) * 2000-05-16 2017-02-15 Sicpa Holding Sa Method, device and security system, all for authenticating a marking
CA2352639A1 (en) * 2000-07-14 2002-01-14 John Joseph Cullen A method and apparatus for monitoring a condition in chlorophyll containing matter
DE10238568A1 (en) * 2002-08-22 2004-03-04 Giesecke & Devrient Gmbh Measurement of the luminescent characteristics of the surface of a banknote uses the output of a light emitting diode as excitation
DE10259293A1 (en) * 2002-12-18 2004-07-22 Giesecke & Devrient Gmbh Banknote validity testing device with which luminescent light generated from security markings is detected, whereby light source and detector are arranged opposite to each other and banknotes are passed between them
US20070145293A1 (en) * 2005-12-27 2007-06-28 Ncr Corporation Secure tag validation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6035914A (en) * 1993-10-22 2000-03-14 Martin Marietta Energy Systems Inc. Counterfeit-resistant materials and a method and apparatus for authenticating materials
WO1999009382A1 (en) * 1997-08-13 1999-02-25 De La Rue International Limited Detector methods and apparatus
GB2366371A (en) * 2000-09-04 2002-03-06 Mars Inc Sensing documents such as currency items

Also Published As

Publication number Publication date
EP2056260B1 (en) 2019-10-30
US7829869B2 (en) 2010-11-09
EP2056260A2 (en) 2009-05-06
DE102007044878A1 (en) 2009-04-09
US20090078886A1 (en) 2009-03-26

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